Hot Briquetted Iron (HBI) is DRI mechanically compressed at high temperatures (above 650°C) into pillow-shaped briquettes, with minimum density of 5g/cm3 and with a higher content of carbon.
Hot briquetting of DRI closes internal pores of the material, lowers the accessible surface to oxidants, increases the apparent density and improves thermal conductivity – all of which help reduce the DRI’s reactivity.
HBI can be safely stored and handled in the same way as steel scrap.